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net: Add net_update_ether() to handle ARP and Ping replies

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When the network is VLAN or SNAP, net_update_ether() will preserve
the original Ethernet packet header and simply replace the src and
dest MACs and the protocol

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Joe Hershberger
2012-05-23 07:59:16 +00:00
parent ece223b52a
commit e711101581
4 changed files with 30 additions and 6 deletions
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2
net/arp.c
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@@ -158,7 +158,7 @@ void ArpReceive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
/* reply with our IP address */
debug("Got ARP REQUEST, return our IP\n");
pkt = (uchar *)et;
eth_hdr_size = NetSetEther(pkt, et->et_src, PROT_ARP);
eth_hdr_size = net_update_ether(et, et->et_src, PROT_ARP);
pkt += eth_hdr_size;
arp->ar_op = htons(ARPOP_REPLY);
memcpy(&arp->ar_tha, &arp->ar_sha, ARP_HLEN);